Dyfyniad APA
ebrary, Inc, Reed, P., & Rothenberg, D. (1993). Wisdom in the open air: The Norwegian roots of deep ecology. University of Minnesota Press.
Dyfyniad Arddull Chicago
ebrary, Inc, Peter Reed, and David Rothenberg. Wisdom in the Open Air: The Norwegian Roots of Deep Ecology. Minneapolis: University of Minnesota Press, 1993.
Dyfyniad MLA
ebrary, Inc, et al. Wisdom in the Open Air: The Norwegian Roots of Deep Ecology. University of Minnesota Press, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.